% handout:1  -->  print on the handouts
% handout:0  -->  do NOT print on the handouts


\begin{frame}
	%
	\frametitle{}
	\framesubtitle{}
	%
	\begin{overlayarea}{\textwidth}{4cm} % {width}{height}
		\onslide<1-2 | handout:0>
		{
			\includegraphics<1-2>[height=3cm]{logo_unipd}
		}
		\onslide<3-4 | handout:1>
		{
			\includegraphics<3-4>[height=3cm]{logo_dei__big}
		}
	\end{overlayarea}
	%
\end{frame}
